Typewriting machine



May 29, 1923. 11,456,637

A. G. F. KUROWSKI TYPEWRITING MACHINE Filed Sept. 1919 /m/e/7 far.-

A ffam Patented May 29, 1323.

warren srares assets? I PATENT @FFHQE.

ALFRED G. F. KUROWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOODTYPEWRI'I'ER COMPANY, OF NEW YORK, N. Y., A CORPORATION 01E DELAWARE.

TYPEWRITING MACHINE.

Application filed September 4, 1919. Serial No. 321,684.

To all whom it may ooncem:

Be it known that l, ALFRED G. F. KURoW- SKI, a citizen of the UnitedStates, formerly a citizen of Germany, residingin Brooklyn 5 Borough, inthe county of Kings, city and State of New York, have invented certainnew and useful Improvements in T ypewrit-.

ing Machines, of which the following is a specification.

B This invention relates to, key-tops for typewriter key-levers, anobject of'the invention being to provide an extremely simple structure,whereby, without tools of any kind, the operative may change thekey-papers, at

will. I r

A feature of the invention consists in providing a key-cup which isscrew-threaded and a key-ring correspondingly screw threaded, betweenwhich cup and ring the key-paper and glass are held.

Other features and advantages will-hereinafter appear.

In the accompanying drawings, F igure 1 is a perspective view of akeylever, showing; my invention applied thereto.

Figure 2 is a compositeview. Figure 3 is a part sectional, partelevational view.

Referring to the drawings, the key-lever 1 has a key-cup 2 mounted onits stem. Said cup, as usual, fits tightly on the key-stem, and isprovided on its flange with screwthreads 3, the flange being ofsufficient height to hold within it the usuel key-glass 4 and key-paper5. In order to securely hold the glass and paper, and also to providemeans for readily obtaining access to the papers, in order to substitutediflerent papers or a blank, as desired, a key-ring 6 is provided,having screw-threaded portions 7, which engage the screw-threaded flange3 of the cup. The key-cup and key-ring are made of light sheet-metal andthe threads are rolled therein. To change the key-papers, the rin isunscrewed, and, after a new paper or b ank is inserted, the ring isagain screwed to the cup.

. threads rolled in the sides thereof and adapted to be screwed downupon said cup, said cap having an inturned-topflange to bear down uponthe glass to retain the glass and paper in the cup.

' ALFRED G. F. KUROWSKI.

Witnesses: 1

EDITH B. LIBBEY,

JENNIE P. THORNE.

